ENVELOPE CHECKRoom to explore.
- Radial gap
- 3.80 mm
- Axial gap
- 1.80 mm
How this is calculated
Radial gap = (case diameter − 2 × wall − 26) / 2. Axial gap = case height − crystal − 0.8 back − 3.9 movement − 0.4 dial − 1.4 hand envelope, in mm.
Only the 26 × 3.9 mm movement envelope is documented. Other dimensions are design assumptions. This checks simple cylindrical overlap, not assembly compatibility, tolerances or water resistance.